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Thread: 2004 Corolla engine noise

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12-27-2003, 11:11 AM	#4 (permalink)
Philip New TN User Join Date: Dec 2003 Location: CA Posts: 19 Gameroom cash: $1500 Thanks: 0 Thanked 0 Times in 0 Posts	The ol "1ZZFE Snarl" Yup, they all do it and for two, possible three reasons: A) the exhaust header is close to the firewall instead of being on the other side of the head (as in earlier years) facing the radiator. B) the exhaust header is TUBING steel ... not thick cast iron. C) the "snarl" lessens with miles .... say 20k or so. Whether this is due to carbon or engine break-in is unknown to me. BUT, the snarl never goes away. It's not a fault ... it's a feature! __________________ - Philip

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